CNMG 120408 T9205 Wendeplatten - Tungaloy

Benefit from the combination of productive CVD-coated T9205 grade, a 0.8 mm corner radius for improved surface finish and ISO compatibility for straightforward tool integration — ideal for stable, high-speed turning operations. Order the insert directly via Metav Werkzeuge or consult the Metav team for application advice.

CNMG120408 T9205 CNMG Turning insert by Tungaloy

A CNMG120408 T9205 indexable turning insert designed for productive steel turning with a CVD-coated carbide substrate and a cylindrical hole for secure clamping.

• CVD-coated carbide T9205 grade
• 0° clearance for robust engagement
• 0.8 mm corner radius for finishing
• Double-sided chipbreaker, cylindrical hole

Increased productivity with a wear-resistant grade

The T9205 grade combines a CVD-coated carbide substrate with a formulation tuned for productive turning of steel under stable conditions and at elevated cutting speeds. The coating provides improved wear resistance compared with uncoated substrates, which translates into longer tool life and fewer index changes during batch production. For process planners this means more predictable cycle times and reduced non-productive time, since the grade is intended for continuous, repeatable machining rather than intermittent or highly interrupted cuts.

Geometry engineered for consistent surface quality

The insert's 0.8 mm corner radius and 80° included angle contribute to a balanced compromise between strength and finish. A medium corner radius like 0.8 mm reduces the risk of chipping at the corner while still permitting a fine surface texture in finishing passes. The rhombic plate form and 0° clearance create a neutral cutting condition that supports dimensional control on external and internal turning operations. These geometric choices help maintain tool stability and improve the reproducibility of parts across long production runs.

Secure clamping and system compatibility

Compatibility with a toolholder is governed by the insert’s form, clearance angle, tolerance class, fixing method, size and thickness. The CNMG120408 features a cylindrical hole and is double-sided, enabling two usable edges per index and straightforward clamping with standard screws and shims. Typical system composition includes an ISO turning insert, an appropriate external holder or boring bar, a support shim or clamp set and replacement fastening hardware — all selected to match the insert’s dimensions and tolerance. The 4.76 mm thickness and ISO size designation support robust mounting and repeatable seating in approved holders.

Application guidance for reliable performance

Selection of the correct chipbreaker and grade is essential: the double-sided chipbreaker on this insert is suitable for a range of turning operations, but the final choice should reflect the workpiece material, depth of cut and machine stability. In marginally stable setups, prioritising a more protective geometry or reduced cutting parameters will extend edge life. The CNMG120408 T9205 insert is particularly appropriate where repeatable performance and good wear resistance are required in steel machining; pairing it with a rigid holder and controlled feeds will leverage the grade’s strengths and deliver consistent part quality.

For tailored advice or to procure genuine Tungaloy CNMG120408 T9205 inserts, contact Metav Werkzeuge — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6785731
• SKU: 6785731-Tungaloy
• Manufacturer SKU: TUN6785731
• Designation: CNMG120408 T9205
• Material: CVD-coated carbide

Core specifications

• Corner radius: 0.8 mm
• Thickness: 4.76 mm
• Size designation: 12
• Included angle: 80°
• Clearance angle: 0°
• Hole: cylindrical

Features

• Double-sided chipbreaker
• Rhombic plate form
• ISO turning insert series
• Application: turning
• Suitable for steel

FAQ

What materials is this insert suited for?
The CNMG120408 T9205 insert is formulated for machining steel; the CVD-coated carbide grade is optimised for productive turning in stable conditions.

How is the insert clamped in the holder?
Clamping is achieved via the cylindrical hole and a standard screw/shim system; compatibility depends on the holder’s form, tolerance and fastening style.

How many usable edges does the insert provide?
As a double-sided indexable insert, the CNMG120408 offers two usable cutting edges before regrinding or replacement is needed.

What is the effect of the 0.8 mm corner radius?
A 0.8 mm radius increases corner strength and helps produce a consistent surface finish while reducing the risk of corner chipping during finishing passes.

Is this an ISO-standard insert?
Yes, the CNMG120408 follows ISO designation conventions and is intended for use in holders designed for ISO turning inserts.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.